Portable ultrasonic nebulizer and nebulization structure thereof

ABSTRACT

A nebulization structure includes a carrier unit, a vibration unit, a nebulization unit and a position-limiting unit. The carrier unit has a first carrier portion and a first surrounding portion extended from an outer perimeter of the first carrier portion, and the first carrier portion has a through hole. The vibration unit includes an annular vibrating sheet disposed on the carrier unit. The nebulization unit is disposed on the first carrier portion, and the nebulization unit has a plurality of micro holes communicated with the through hole. The position-limiting unit has a first position-limiting portion disposed on the nebulization unit and a second position-limiting portion extended from an outer perimeter of the first position-limiting portion and along the first surrounding portion. The nebulization unit is positioned between the first carrier portion and the position-limiting unit, and the first position-limiting portion has an opening for exposing the micro holes.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The instant disclosure relates to a nebulizer and a nebulizationstructure thereof, and more particularly to a portable ultrasonicnebulizer and a nebulization structure thereof.

2. Description of Related Art

The atomization method is often used to treat respiratory diseases. Themethod can be achieved by using a nebulizer, and particles sprayed bythe nebulizer are droplets that are about 3˜5 μm. For example, liquidmedicaments can reach bronchus and lungs for therapy. The proceduretypically involves aerosolized particles from liquid medicament areinhaled by the mouth and nose to enter the bronchus, and the particlesthen are spread to the whole alveolus so that liquid medicament can besufficiently absorbed by the human body. This way is better than oraladministration. Currently, the atomization way adapted by nebulizersusually includes pneumatic atomization, ultrasonic atomization orelectronic aerosol technology (e.g., piezoelectric nozzle method) forthe operating mechanism of the nebulizer.

SUMMARY OF THE INVENTION

One aspect of the instant disclosure relates to a portable ultrasonicnebulizer and a nebulization structure thereof.

One of the embodiments of the instant disclosure provides a nebulizationstructure, comprising: a carrier unit, a vibration unit, a waterproofpackage unit, a nebulization unit and a position-limiting unit. Thecarrier unit has a first carrier portion, a first surrounding portionextended outward from an outer perimeter of the first carrier portion, asecond carrier portion extended outward from an outer perimeter of thefirst surrounding portion, and a second surrounding portion extendedoutward from an outer perimeter of the second carrier portion, whereinthe first carrier portion has a through hole, and the first surroundingportion, the second carrier portion and the second surrounding portionare sequentially connected to form a surrounding groove. The vibrationunit includes an annular vibrating sheet received in the surroundinggroove. The waterproof package unit is received in the surroundinggroove to enclose the annular vibrating sheet. The nebulization unit isdisposed on the first carrier portion, wherein the nebulization unit hasa plurality of micro holes communicated with the through hole. Theposition-limiting unit has a first position-limiting portion disposed onthe nebulization unit and a second position-limiting portion extendedoutward from an outer perimeter of the first position-limiting portionand along the first surrounding portion, wherein the nebulization unitis positioned between the first carrier portion and theposition-limiting unit, and the first position-limiting portion has anopening for exposing the micro holes.

Another one of the embodiments of the instant disclosure provides anebulization structure, comprising: a carrier unit, a vibration unit, anebulization unit, and a position-limiting unit. The carrier unit has afirst carrier portion and a first surrounding portion extended from anouter perimeter of the first carrier portion, wherein the first carrierportion has a through hole. The vibration unit includes an annularvibrating sheet disposed on the carrier unit. The nebulization unit isdisposed on the first carrier portion, wherein the nebulization unit hasa plurality of micro holes communicated with the through hole. Theposition-limiting unit has a first position-limiting portion disposed onthe nebulization unit and a second position-limiting portion extendedfrom an outer perimeter of the first position-limiting portion and alongthe first surrounding portion, wherein the nebulization unit ispositioned between the first carrier portion and the position-limitingunit, and the first position-limiting portion has an opening forexposing the micro holes.

Yet another one of the embodiments of the instant disclosure provides aportable ultrasonic nebulizer, comprising: a casing structure and anebulization structure. The casing structure includes an outer casing, atop cover rotatably disposed on a top side of the outer casing, and anozzle disposed on an outer perimeter surface of the outer casing,wherein the outer casing has a receiving space formed on the top sidethereof and covered by the top cover. The nebulization structure isreceived in the outer casing and communicated between the receivingspace and the nozzle, wherein the nebulization structure comprises acarrier unit, a vibration unit, a waterproof package unit, anebulization unit, and a position-limiting unit. The carrier unit has afirst carrier portion, a first surrounding portion extended outward froman outer perimeter of the first carrier portion, a second carrierportion extended outward from an outer perimeter of the firstsurrounding portion, and a second surrounding portion extended outwardfrom an outer perimeter of the second carrier portion, wherein the firstcarrier portion has a through hole. The first surrounding portion, thesecond carrier portion, and the second surrounding portion aresequentially connected to form a surrounding groove. The vibration unitincludes an annular vibrating sheet received in the surrounding groove.The waterproof package unit is received in the surrounding groove toenclose the annular vibrating sheet. The nebulization unit is disposedon the first carrier portion, wherein the nebulization unit has aplurality of micro holes communicated with the through hole. Theposition-limiting unit has a first position-limiting portion disposed onthe nebulization unit and a second position-limiting portion extendedoutward from an outer perimeter of the first position-limiting portionand along the first surrounding portion, wherein the nebulization unitis positioned between the first carrier portion and theposition-limiting unit, and the first position-limiting portion has anopening for exposing the micro holes.

More precisely, the portable ultrasonic nebulizer further comprises amedicine accommodating structure, wherein the medicine accommodatingstructure comprises: a medicine accommodating unit and a movable unit.The medicine accommodating unit is disposed in the receiving space,wherein the medicine accommodating unit includes a main body, at leastone auxiliary portion adjacent to the main body, a medicineaccommodating space surrounded by the main body and the at least oneauxiliary portion and communicated with the receiving space, a firstopening formed between one of two opposite ends of the main body and oneof two opposite ends of the at least one auxiliary portion andcommunicated between the receiving space and the medicine accommodatingspace, and a second opening formed between the other end of the mainbody and the other end of the at least one auxiliary portion andcommunicated between the receiving space and the medicine accommodatingspace. The movable unit is extended from an inner surface of the topcover into the receiving space, wherein the movable unit is movablydisposed between the receiving space and the medicine accommodatingspace through the first opening. At least one pharmaceutical capsulehaving a medicinal liquid received therein is placed inside the medicineaccommodating space. Whereby, when the movable unit is moved from thereceiving space into the medicine accommodating space, the movable unitpierces into the at least one pharmaceutical capsule, such that themedicinal liquid flows from the at least one pharmaceutical capsule intothe receiving space.

Therefore, the nebulization unit can be positioned between the firstcarrier portion and the position-limiting unit due to the design of “theposition-limiting unit has a first position-limiting portion disposed onthe nebulization unit and a second position-limiting portion extendedoutward from an outer perimeter of the first position-limiting portionand along the first surrounding portion”.

To further understand the techniques, means and effects of the instantdisclosure applied for achieving the prescribed objectives, thefollowing detailed descriptions and appended drawings are herebyreferred to, such that, and through which, the purposes, features andaspects of the instant disclosure can be thoroughly and concretelyappreciated. However, the appended drawings are provided solely forreference and illustration, without any intention to limit the instantdisclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows an exploded schematic view of a nebulization structureaccording to the instant disclosure;

FIG. 2 shows another exploded schematic view of the nebulizationstructure according to the instant disclosure;

FIG. 3 shows an assembled schematic view of the nebulization structureaccording to the instant disclosure;

FIG. 4 shows a cross-sectional view taken along the section line A-A ofFIG. 3;

FIG. 5 shows a cross-sectional, schematic view of another nebulizationstructure according to the instant disclosure;

FIG. 6 shows a partially exploded schematic view of a portableultrasonic nebulizer according to the instant disclosure;

FIG. 7 shows an assembled schematic view of the portable ultrasonicnebulizer according to the instant disclosure;

FIG. 8 shows a cross-sectional view taken along the section line B-B ofFIG. 7;

FIG. 9 shows a top schematic view of the portable ultrasonic nebulizerwithout a top cover according to the instant disclosure;

FIG. 10 shows a bottom schematic view of the top cover according to theinstant disclosure;

FIG. 11 shows a top schematic view demonstrating a pharmaceuticalcapsule before a movable unit is piercing into according to the instantdisclosure; and

FIG. 12 shows a top schematic view demonstrating a pharmaceuticalcapsule after a movable unit is piercing into according to the instantdisclosure.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The embodiments of “a portable ultrasonic nebulizer and a nebulizationstructure thereof” of the instant disclosure are described. Otheradvantages and objectives of the instant disclosure can be easilyunderstood by one skilled in the art from the disclosure. The instantdisclosure can be applied in different embodiments. Variousmodifications and variations can be made to various details in thedescription for different applications without departing from the scopeof the instant disclosure. The drawings of the instant disclosure areprovided only for simple illustrations, but are not drawn to scale anddo not reflect the actual relative dimensions. The following embodimentsare provided to describe in detail the concept of the instantdisclosure, and are not intended to limit the scope thereof in any way.

Referring to FIG. 1 to FIG. 4, FIG. 4 shows a cross-sectional view takenalong the section line A-A of FIG. 3. The instant disclosure provides anebulization structure 2, comprising: a carrier unit 21, a vibrationunit 22, a waterproof package unit 23, a nebulization unit 24, and aposition-limiting unit 25.

Referring to FIG. 1, FIG. 2 and FIG. 4, the carrier unit 21 has a firstcarrier (carrying) portion 211, a first surrounding (annular) portion212 extended outward from an outer perimeter (such as an outersurrounding periphery) of the first carrier portion 211, a secondcarrier portion 213 extended outward from an outer perimeter of thefirst surrounding portion 212, and a second surrounding portion 214extended outward from an outer perimeter of the second carrier portion213. The first carrier portion 211 has a through hole 2110. The firstsurrounding portion 212, the second carrier portion 213, and the secondsurrounding portion 214 are sequentially connected to form a surroundinggroove 2110. More precisely, as shown in FIG. 4, the first surroundingportion 212 can be extended backward and slantwise from the outerperimeter of the first carrier portion 211. The second carrier portion213 can be extended vertically from the outer perimeter of the firstsurrounding portion 212 (or extended in a direction perpendicular to thefirst surrounding portion 212) and horizontal (parallel) to the firstcarrier portion 211. The second surrounding portion 214 can be extendedfrontward and horizontally from the outer perimeter of the secondcarrier portion 213 and vertical to the second carrier portion 213. Inaddition, the carrier unit 21 further has a surrounding end portion 215extended outward and horizontally from the outer perimeter of the secondsurrounding portion 214 and horizontal to the first carrier portion 211.

Moreover, referring to FIG. 1 and FIG. 4, the vibration unit 22 includesan annular vibrating sheet 220 disposed on the carrier unit 21 andreceived in the surrounding groove 2100. The waterproof package unit 23(as shown in FIG. 4) is received in the surrounding groove 2100 toenclose the annular vibrating sheet 220. For example, the annularvibrating sheet 220 may be a piezoelectric driver made of anypiezoelectric material, and the waterproof package unit 23 may be anytype of package material for preventing the annular vibrating sheet 220from being influenced by external water vapor or moisture.

Furthermore, referring to FIG. 1, FIG. 2 and FIG. 4, the nebulizationunit 24 such as an atomizer plate or a nozzle sheet disposed on thefirst carrier portion 211, and the nebulization unit 24 has a pluralityof micro holes (or micro nozzles) 241 communicated with (in fluidcommunication with) the through hole 2110. In addition, theposition-limiting unit 25 has a first position-limiting portion 251disposed on the nebulization unit 24 and a second position-limitingportion 252 extended outward from the outer perimeter of the firstposition-limiting portion 251 along the first surrounding portion 212.The nebulization unit 24 is positioned between the first carrier portion211 and the position-limiting unit 25, and the first position-limitingportion 251 has an opening 2510 for exposing the micro holes 241.

More precisely, referring to FIG. 1, FIG. 2 and FIG. 4, the firstcarrier portion 211 has a front surface 2111 and a rear surface 2112opposite to the front surface 2111. The first surrounding portion 212has a first surrounding surface 2121 connected to the front surface 2111and a second surrounding surface 2122 opposite to the first surroundingsurface 2121. The second surrounding surface 2122 is connected to therear surface 2112. In addition, the nebulization unit 24 has asurrounding positioning portion 242 disposed between the front surface2111 of the first carrier portion 211 and the first position-limitingportion 251 for surrounding the micro holes 241. Referring to FIG. 1 andFIG. 4, the front surface 2111 of the first carrier portion 211 istotally enclosed by the surrounding positioning portion 242, and oneportion of the first surrounding surface 2121 of the first surroundingportion 212 is enclosed by the second position-limiting portion 252.

More precisely, referring to FIG. 1 to FIG. 4, the nebulizationstructure 2 further comprises a casing unit 26. The carrier unit 21, thevibration unit 22, the waterproof package unit 23, the nebulization unit24, and the position-limiting unit 25 are received in the casing unit26. In addition, the casing unit 26 includes a front casing 261 and arear casing 262 mated with the front casing 261. The front casing 261has an outlet port 2611 for exposing the micro holes 241 and atrumpet-shaped opening 2612 in fluid communication with the outlet port2611. The rear casing 262 has an inlet port 2621 corresponding to theoutlet port 2611, a plurality of convex blocks 2622 adjacent to andsurrounding the inlet port 2621, and a water-bearing space 2623 (such asa water-containing space) surrounded by the convex blocks 2622. Thewater-bearing space 2623 is in fluid communication with the inlet port2621 for increasing the water content of the inlet area. Moreover, asshown in FIG. 4, the first position-limiting portion 251 of theposition-limiting unit 25 and the surrounding end portion 215 can beconcurrently abutted against an inner surface 2610 of the front casing261, whereas the second carrier portion 213 can be abutted against aninner surface 2620 of the rear casing 262.

It is worth mentioning that, as shown in FIG. 5, the nebulization unit24 has a surrounding positioning portion 242 disposed between the rearsurface 2112 of the first carrier portion 211 and the firstposition-limiting portion 251 for surrounding the micro holes 241. Therear surface 2112 of the first carrier portion 211 can be completelyenclosed by the surrounding positioning portion 242, and one portion ofthe second surrounding surface 2122 of the first surrounding portion 212can be enclosed by the second position-limiting portion 252. Inaddition, the first carrier portion 211 and the surrounding end portion215 can be concurrently abutted against an inner surface 2610 of thefront casing 261, and the second carrier portion 213 can be abuttedagainst an inner surface 2620 of the rear casing 262. Hence, thenebulization unit 24 and the position-limiting unit 25 can be disposedin front of the carrier unit 21 (as shown in FIG. 4), but also can bedisposed behind the carrier unit 21 (as shown in FIG. 5).

Furthermore, referring to FIG. 6 to FIG. 8, the instant disclosureprovides a portable ultrasonic nebulizer Z, comprising: a casingstructure 1, a nebulization structure 2, and a push button structure 3.The casing structure 1 includes an outer casing 11, a top cover 12rotatably disposed on a top side of the outer casing 11, and a nozzle 13disposed on an outer perimeter surface of the outer casing 11. The outercasing 11 has a receiving space 110 formed on the top side thereof andthe receiving space 110 is covered by the top cover 12. The top cover 12has an exhaust vent 120 in fluid communication with the receiving space110. In addition, the nebulization structure 2 is received in the outercasing 11 and is in fluid communication between the receiving space 110and the nozzle 13. The push button structure 3 includes a power pushbutton 31 disposed on the outer perimeter surface of the outer casing 11and at least one switching push button 32 disposed on the outerperimeter surface of the outer casing 11.

More precisely, referring to FIG. 6 and FIG. 8 to FIG. 10, the portableultrasonic nebulizer Z further comprises a medicine accommodatingstructure 4 (such as a cartridge structure), and the medicineaccommodating structure 4 includes a medicine accommodating unit 41 anda movable unit 42.

First, referring to FIG. 6 and FIG. 9, FIG. 8 shows a cross-sectionalview taken along the section line B-B of FIG. 7. The medicineaccommodating unit 41 is disposed in the receiving space 110. Forexample, the medicine accommodating unit 41 includes a main body 411, atleast one auxiliary portion 412 adjacent to the main body 411, amedicine accommodating space 413 (such as a cartridge accommodationspace) surrounded by the main body 411 and the at least one auxiliaryportion 412, a first opening 414 formed between one of two opposite endsof the main body 411 and one of two opposite ends of the at least oneauxiliary portion 412, a second opening 415 formed between the other endof the main body 411 and the other end of the at least one auxiliaryportion 412, and a reinforcement rib 416 connected (or integrallyconnected) to an outer surface 4110 of the main body 411. The medicineaccommodating space 413 is in fluid communication with the receivingspace 110, the first opening 414 is in fluid communication between thereceiving space 110 and the medicine accommodating space 413, and thesecond opening 415 is in fluid communication between the receiving space110 and the medicine accommodating space 413.

Moreover, referring to FIG. 6, FIG. 8 and FIG. 10, the movable unit 42is extended from an inner surface 121 of the top cover 12 into thereceiving space 110. For example, the movable unit 42 includes a firstmovable element 421 extended from the inner surface 121 of the top cover12 into the receiving space 110 and a second movable element 422extended from the inner surface 121 of the top cover 12 into thereceiving space 110. The first movable element 421 and the secondmovable element 422 can be symmetrically disposed on the inner surface121 of the top cover 12.

More precisely, referring to FIG. 11 and FIG. 12, the movable unit 42 ismovably disposed between the receiving space 110 and the medicineaccommodating space 413 through the first opening 414. In other words,when the top cover 12 is rotated counterclockwise by the user toconcurrently move the first movable element 421 and the second movableelement 422, one of the two movable elements, the first movable element421 and the second movable element 422, can be moved between thereceiving space 110 and the medicine accommodating space 413 through thefirst opening 414. More precisely, when the top cover 12 is rotatedcounterclockwise by the user to concurrently move the first movableelement 421 and the second movable element 422, one of the two movableelements, the first movable element 421 and the second movable element422, can pass through the first opening 414 and move from the receivingspace 110 into the medicine accommodating space 413 or from the medicineaccommodating space 413 to the receiving space 110. For example, atleast one pharmaceutical capsule P has a medicinal liquid M receivedtherein and the pharmaceutical capsule P is placed inside the medicineaccommodating space 413. When the movable unit 42 is moved from thereceiving space 110 into the medicine accommodating space 413, themovable unit 42 can pierce into the at least one pharmaceutical capsuleP, such that the medicinal liquid M can flow from the at least onepharmaceutical capsule P into the receiving space 110. When themedicinal liquid M flows into the water-bearing space 2623, themedicinal liquid M can be nebulized by the nebulization structure 2.

Furthermore, referring to FIG. 6 to FIG. 8, the portable ultrasonicnebulizer Z further comprises a protection structure 5. The protectionstructure 5 is disposed on the casing structure 1 for protecting theportable ultrasonic nebulizer Z. The protection structure 5 includes afirst protection unit 51, a second protection unit 52, a thirdprotection unit 53, and a fourth protection unit 54.

First, referring to FIG. 6 and FIG. 7, the first protection unit 51includes a first protection body 511 having a via hole 5110, and thefirst protection body 511 is disposed in front of the power push button31 for covering the power push button 31. The second protection unit 52includes two second protection bodies 521 corresponding to each other.The two second protection bodies 521 are respectively extended backwardfrom two opposite sides of the first protection body 511, and one of thetwo second protection bodies 521 is disposed in front of the at leastone switching push button 32 for covering the at least one switchingpush button 32. The third protection unit 53 includes a third protectionbody 531 extended backward from a top side of the first protection body511 and connected between the two second protection bodies 521 and anelastic body 532 connected with the third protection body 531. The thirdprotection body 53 is disposed on the top cover 12. One portion of theelastic body 532 is received in the exhaust vent 120 of the top cover 12for enclosing the exhaust vent 120 of the top cover 12. The fourthprotection unit 54 includes a fourth protection body 541 extendedforward from a front side of the first protection body 511. The nozzle13 is covered by the fourth protection body 541 for protecting thenebulization structure 2. In other words, the protection structure 5includes a plurality of protection units. One of the protection units(such as the fourth protection unit 54) has a protection body (such asthe fourth protection body 541) and an elastic body 532 connected withthe protection body, in which the protection body is disposed on the topcover 12, and one portion of the elastic body 532 is received inside theexhaust vent 120 of the top cover 12 for enclosing the exhaust vent 120of the top cover 12. Thus, the protection structure 5 can prevent boththe power push button 31 and the at least one switching push button 32from being touched by any foreign body, and also can prevent themedicinal liquid M received inside the receiving space 110 from leakingout of the exhaust vent 120 of the top cover 12.

More precisely, referring to FIG. 7 and FIG. 8, the third protectionbody 531 has a receiving hole 5310. The receiving hole 5310 has a firstreceiving portion 53101 connected to an outer surface 5311 of the thirdprotection body 531 and a second receiving portion 53102 connected to aninner surface 5312 of the third protection body 531. The secondreceiving portion 53102 is in fluid communication with the firstreceiving portion 53101. The width W2 of the second receiving portion53102 is larger than the width W1 of the first receiving portion 53101.The elastic body 532 has a first elastic portion 5321 received in thefirst receiving portion 53101, a second elastic portion 5322 connectedwith the first elastic portion 5321, and a third elastic portion 5323extended downward from the second elastic portion 5322. The secondelastic portion 5322 is received in the second receiving portion 53102,and third elastic portion 5323 is received in the exhaust vent 120 ofthe top cover 12.

In conclusion, the nebulization unit 24 can be positioned between thefirst carrier portion 211 and the position-limiting unit 25 due to thedesign of “the position-limiting unit 25 has a first position-limitingportion 251 disposed on the nebulization unit 24 and a secondposition-limiting portion 252 extended outward from an outer perimeterof the first position-limiting portion 251 along the first surroundingportion 212”.

The aforementioned descriptions merely represent the preferredembodiments of the instant disclosure, without any intention to limitthe scope of the instant disclosure which is fully described only withinthe following claims. Various equivalent changes, alterations ormodifications based on the claims of the instant disclosure are all,consequently, viewed as being embraced by the scope of the instantdisclosure.

What is claimed is:
 1. A nebulization structure, comprising: a carrierunit having a first carrier portion, a first surrounding portionextended outward from an outer perimeter of the first carrier portion, asecond carrier portion extended outward from an outer perimeter of thefirst surrounding portion, and a second surrounding portion extendedoutward from an outer perimeter of the second carrier portion, whereinthe first carrier portion has a through hole, and the first surroundingportion, the second carrier portion and the second surrounding portionare sequentially connected to form a surrounding groove; a vibrationunit including an annular vibrating sheet received in the surroundinggroove; a waterproof package unit received in the surrounding groove toenclose the annular vibrating sheet; a nebulization unit disposed on thefirst carrier portion, wherein the nebulization unit has a plurality ofmicro holes communicated with the through hole; and a position-limitingunit having a first position-limiting portion disposed on thenebulization unit and a second position-limiting portion extendedoutward from an outer perimeter of the first position-limiting portionand along the first surrounding portion, wherein the nebulization unitis positioned between the first carrier portion and theposition-limiting unit, and the first position-limiting portion has anopening for exposing the micro holes.
 2. The nebulization structure ofclaim 1, further comprising a casing unit, wherein the carrier unit, thevibration unit, the waterproof package unit, the nebulization unit andthe position-limiting unit are received in the casing unit, the casingunit includes a front casing and a rear casing mated with the frontcasing, the front casing has an outlet port and a trumpet-shaped openingcommunicated with the outlet port, and the rear casing has an inlet portcorresponding to the outlet port, a plurality of convex blocks adjacentto the inlet port and surrounding the inlet port, and a water-bearingspace surrounded by the convex blocks and communicated with the inletport, wherein the first surrounding portion is extended backward andslantwise from the outer perimeter of the first carrier portion, thesecond carrier portion is extended vertically from the outer perimeterof the first surrounding portion and horizontal to the first carrierportion, the second surrounding portion is extended frontward andhorizontally from the outer perimeter of the second carrier portion andvertical to the second carrier portion, and the carrier unit has asurrounding end portion extended outward and horizontally from the outerperimeter of the second surrounding portion and horizontal to the firstcarrier portion, wherein the first carrier portion has a front surfaceand a rear surface opposite to the front surface, and the firstsurrounding portion has a first surrounding surface connected to thefront surface and a second surrounding surface opposite to the firstsurrounding surface and connected to the rear surface.
 3. Thenebulization structure of claim 2, wherein the nebulization unit has asurrounding positioning portion disposed between the front surface ofthe first carrier portion and the first position-limiting portion andsurrounding the micro holes, the front surface of the first carrierportion is enclosed by the surrounding positioning portion, and oneportion of the first surrounding surface of the first surroundingportion is enclosed by the second position-limiting portion, wherein theposition-limiting unit and the surrounding end portion are abuttedagainst an inner surface of the front casing, and the second carrierportion is abutted against an inner surface of the rear casing.
 4. Thenebulization structure of claim 2, wherein the nebulization unit has asurrounding positioning portion disposed between the rear surface of thefirst carrier portion and the first position-limiting portion andsurrounding the micro holes, the rear surface of the first carrierportion is enclosed by the surrounding positioning portion, and oneportion of the second surrounding surface of the first surroundingportion is enclosed by the second position-limiting portion.
 5. Anebulization structure, comprising: a carrier unit having a firstcarrier portion and a first surrounding portion extended from an outerperimeter of the first carrier portion, wherein the first carrierportion has a through hole; a vibration unit including an annularvibrating sheet disposed on the carrier unit; a nebulization unitdisposed on the first carrier portion, wherein the nebulization unit hasa plurality of micro holes communicated with the through hole; and aposition-limiting unit having a first position-limiting portion disposedon the nebulization unit and a second position-limiting portion extendedfrom an outer perimeter of the first position-limiting portion and alongthe first surrounding portion, wherein the nebulization unit ispositioned between the first carrier portion and the position-limitingunit, and the first position-limiting portion has an opening forexposing the micro holes.
 6. A portable ultrasonic nebulizer,comprising: a casing structure including an outer casing, a top coverrotatably disposed on a top side of the outer casing, and a nozzledisposed on an outer perimeter surface of the outer casing, wherein theouter casing has a receiving space formed on the top side thereof andcovered by the top cover; and a nebulization structure received in theouter casing and communicated between the receiving space and thenozzle, wherein the nebulization structure comprises: a carrier unithaving a first carrier portion, a first surrounding portion extendedoutward from an outer perimeter of the first carrier portion, a secondcarrier portion extended outward from an outer perimeter of the firstsurrounding portion, and a second surrounding portion extended outwardfrom an outer perimeter of the second carrier portion, wherein the firstcarrier portion has a through hole, wherein the first surroundingportion, the second carrier portion and the second surrounding portionare sequentially connected to form a surrounding groove; a vibrationunit including an annular vibrating sheet received in the surroundinggroove; a waterproof package unit received in the surrounding groove toenclose the annular vibrating sheet; a nebulization unit disposed on thefirst carrier portion, wherein the nebulization unit has a plurality ofmicro holes communicated with the through hole; and a position-limitingunit having a first position-limiting portion disposed on thenebulization unit and a second position-limiting portion extendedoutward from an outer perimeter of the first position-limiting portionand along the first surrounding portion, wherein the nebulization unitis positioned between the first carrier portion and theposition-limiting unit, and the first position-limiting portion has anopening for exposing the micro holes.
 7. The portable ultrasonicnebulizer of claim 6, further comprising a medicine accommodatingstructure, wherein the medicine accommodating structure comprises: amedicine accommodating unit disposed in the receiving space, wherein themedicine accommodating unit includes a main body, at least one auxiliaryportion adjacent to the main body, a medicine accommodating spacesurrounded by the main body and the at least one auxiliary portion andcommunicated with the receiving space, a first opening formed betweenone of two opposite ends of the main body and one of two opposite endsof the at least one auxiliary portion and communicated between thereceiving space and the medicine accommodating space, and a secondopening formed between the other end of the main body and the other endof the at least one auxiliary portion and communicated between thereceiving space and the medicine accommodating space; and a movable unitextended from an inner surface of the top cover into the receivingspace, wherein the movable unit is movably disposed between thereceiving space and the medicine accommodating space through the firstopening; wherein at least one pharmaceutical capsule having a medicinalliquid received therein is placed inside the medicine accommodatingspace, and when the movable unit is moved from the receiving space intothe medicine accommodating space, the movable unit pierces into the atleast one pharmaceutical capsule, such that the medicinal liquid flowsfrom the at least one pharmaceutical capsule into the receiving space.8. The portable ultrasonic nebulizer of claim 7, wherein the medicineaccommodating unit includes a reinforcement rib connected to an outersurface of the main body, the movable unit includes a first movableelement extended from the inner surface of the top cover into thereceiving space and a second movable element extended from the innersurface of the top cover into the receiving space, and the first movableelement and the second movable element are symmetrically disposed on theinner surface of the top cover, wherein when the top cover is rotated toconcurrently move the first movable element and the second movableelement, one of the first movable element and the second movable elementis moved between the receiving space and the medicine accommodatingspace through the first opening.
 9. The portable ultrasonic nebulizer ofclaim 6, further comprising a protection structure and a push buttonstructure, wherein the protection structure is disposed on the casingstructure, and the push button structure includes a power push buttondisposed on the outer perimeter surface of the outer casing and at leastone switching push button disposed on the outer perimeter surface of theouter casing, wherein the protection structure comprises: a firstprotection unit including a first protection body, wherein the firstprotection body is disposed in front of the power push button forcovering the power push button; a second protection unit including twosecond protection bodies corresponding to each other, wherein the twosecond protection bodies are respectively extended backward from twoopposite sides of the first protection body, and one of the two secondprotection bodies is disposed in front of the at least one switchingpush button for covering the at least one switching push button; a thirdprotection unit including a third protection body extended backward froma top side of the first protection body and connected between the twosecond protection bodies and an elastic body connected with the thirdprotection body, wherein the third protection body is disposed on thetop cover, and one portion of the elastic body is received in an exhaustvent of the top cover for enclosing the exhaust vent of the top cover;and a fourth protection unit including a fourth protection body extendedforward from a front side of the first protection body, wherein thenozzle is covered by the fourth protection body for protecting thenebulization structure.
 10. The portable ultrasonic nebulizer of claim9, wherein the third protection body has a receiving hole, the receivinghole has a first receiving portion connected to an outer surface of thethird protection body and a second receiving portion connected to aninner surface of the third protection body and communicated with thefirst receiving portion, and the width of the second receiving portionis larger than the width of the first receiving portion, wherein theelastic body has a first elastic portion received in the first receivingportion, a second elastic portion connected with the first elasticportion and received in the second receiving portion, and a thirdelastic portion extended downward from the second elastic portion andreceived in the exhaust vent of the top cover.